<template>
    <panel-head :route="route"/>
    <div class="btns">
        <el-button :icon="Plus" type="primary" @click="open(null)" size="small">新增</el-button>
    </div>
    <el-table :data="tableData.list" style="width: 100%;">
        <el-table-column prop="id" label="id"/>
        <el-table-column prop="name" label="昵称"/>
        <el-table-column prop="permissionName" label="菜单权限" width="500px"/>
        <el-table-column label="操作">
            <template #default="scope">
                <el-button type="primary" @click="open(scope.row)">编辑</el-button>
            </template>
        </el-table-column>
    </el-table>
    <div class="pagination-info">
        <el-pagination
        v-model:current-page="paginationData.pageNum"
        :page-size="paginationData.pageSize"
        size="small"
        :background="false"
        layout="total, prev, pager, next"
        :total="tableData.total"
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        />
    </div>

    <el-dialog
        v-model="dialogFormVisable"
        :befor-close="beforClose"
        title="添加权限"
        width="500"
    >
        <el-form
            ref="formRef"
            label-width="100px"
            label-position="left"
            :model="form"
            :rules="rules"
        >
            <el-form-item v-show="false" prop="id">
                <el-input v-model="form.id" />
            </el-form-item>
            <el-form-item label="名称" prop="name">
                <el-input v-model="form.name" placeholder="请填写权限名称"/>
            </el-form-item>
            <el-form-item label="权限" prop="permissions">
                <el-tree
                    ref="treeRef"
                    style="max-width: 600px;"
                    :data="permissionData"
                    node-key="id"
                    show-checkbox
                    :default-checked-keys="defaultKeys"
                    :default-expanded-keys="[2]"
                />
            </el-form-item>
        </el-form>
        <template #footer>
            <div class="dialog-footer">
                <el-button type="primary" @click="confirm(formRef)">确认</el-button>
            </div>
        </template>
    </el-dialog>
</template>

<script setup>
import { ref,reactive,onMounted, nextTick } from 'vue';
import {userGetMenu,userSetMenu,menuList} from '../../../api'
import {Plus} from '@element-plus/icons-vue'
import { useRoute } from 'vue-router';

const route = useRoute()

onMounted(()=>{
    userGetMenu().then(({data})=>{
        console.log(data)
        permissionData.value = data.data
    })
    getListData()
})

//列表数据
const tableData = reactive({
    list:[],
    total:0
})

//打开弹窗
const open = (rowData = {}) =>{
    dialogFormVisable.value = true
    //弹窗打开form是异步生成的
    nextTick(()=>{
        if(rowData){
            Object.assign(form,{id:rowData.id, name: rowData.name})
            treeRef.value.setCheckedKeys(rowData.permission)
            console.log('1')
        }
        else {
            //bug点击编辑之后不做任何改变直接点×，然后点击新增会继承之前编辑打开弹窗的内容，open(null)失效
            console.log('2',rowData)
        }
    })
}

const paginationData = reactive({
    pageNum:1,
    pageSize:10
})

const handleSizeChange = (val)=>{
    paginationData.pageSize = val
    getListData()
}

const handleCurrentChange = (val)=>{
    paginationData.pageNum = val
    getListData()
}

//请求列表数据
const getListData = ()=>{
    menuList(paginationData).then(({data})=>{
        const {list,total} = data.data
        tableData.list = list
        tableData.total = total
    })
}

const formRef = ref()

//form的数据
const form = reactive({
    id:'',
    name:'',
    permissions:''
})

//树形菜单权限数据
const permissionData = ref([])

//弹窗的显示隐藏
const dialogFormVisable = ref(false)

//关闭弹窗前的回调
const beforClose = ()=>{
    dialogFormVisable.value = false
    //重置表单
    formRef.value.resetFields()
    //tree选择重置
    treeRef.value.setCheckedKeys(defaultKeys)
}

//选中权限
const defaultKeys = [4,5]
const treeRef = ref()

const rules = reactive({
    name:[{required:true,trigger:'blur',message:'请输入权限名称'}]
})

//表单提交
const confirm = async(formEl)=>{
    if(!formEl) return
    await formEl.validate((valid,fields)=>{
        if(valid){
            //获取到选择的checkbox数据
            const permissions = JSON.stringify(treeRef.value.getCheckedKeys())
            userSetMenu({name:form.name,permissions,id:form.id}).then(({data})=>{
                console.log(data)
                beforClose()
                getListData()
            })
        } else{
            console.log('error submit!',fields)
        }
    })
}
</script>

<style lang="less" scoped>
.btns{
    padding: 10px 0 10px 10px;
    background: #fff;
}
</style>